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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Volume 24, Number 1 (1973) → Timing important, research shows Growth regulators stimulate ponderosa pine seedling development

Timing important, research shows Growth regulators stimulate ponderosa pine seedling development

Effect of growth regulator treatment on development of ponderosa pine seedlings was examined in a greenhouse experiment. An auxin treatment containing 0.5 ppm indoleacetic acid and 0.05 indolebutyric acid used in combination with a shoot inhibitor produced superior root growth, but comparisons with other tests show that treatment timing and physiological condition of stock are important considerations.


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Author(s): Michael S. Coffman, Howard Loewenstein

Publication: Tree Planters' Notes - Volume 24, Number 1 (1973)

Volume: 24

Number: 1